The correct answer is (a).
The percentage of expenditure on food is likely to decrease as the income of a household increases. This is because as income increases, people have more money to spend on other things, such as housing, transportation, and entertainment. They may also choose to buy higher-quality food, which can be more expensive.
However, there are some factors that can affect this trend. For example, if a household has young children, they may spend a higher percentage of their income on food, even if their income is high. Additionally, if a household lives in a rural area, they may have to spend a higher percentage of their income on food, as food may be more expensive in rural areas.
Overall, the percentage of expenditure on food is likely to decrease as the income of a household increases. However, there are some factors that can affect this trend.
Here is a brief explanation of each option:
(a) Decrease: As income increases, people have more money to spend on other things, such as housing, transportation, and entertainment. They may also choose to buy higher-quality food, which can be more expensive.
(b) Increase: This is unlikely, as food is a basic necessity and people will always need to spend money on it.
(c) Remain constant: This is also unlikely, as people’s spending habits tend to change as their income increases.
(d) No definite pattern is likely to occur: This is possible, but it is less likely than the other options.